Add support for "ve" - VectorEngine ISA

[Johann-Tobias Aaron Raphael Schäg]

https://en.wikichip.org/wiki/nec/vector_engine is an ISA running on 
accelerator card one can compile for using LLVM. VEOS presents an Linux 
user space to the program. binutils and similar tools are compiled for 
this ISA and distributed as a rpm package by NEC, so i've ran gnu code 
on that ISA.

I'd ask you to add support for this so i one day might be able to build 
programs out of the box for the second hand VectorEngine under my desk. 
Patch below.






diff --git a/config.sub b/config.sub
index 38f3d037a78..3c611a65aaa 100755
--- a/config.sub
+++ b/config.sub
@@ -1269,6 +1269,7 @@ case $cpu-$vendor in
                        | ubicom32 \
                        | v70 | v850 | v850e | v850e1 | v850es | v850e2 
| v850e2v3 \
                        | vax \
+                       | ve \
                        | visium \
                        | w65 \
                        | wasm32 | wasm64 \